Page 24 of 240

²Under snowy or dirty weather conditions, your vehicle's climate
control system should be left in the OFF position when the vehicle is
parked. This allows the climate control system to be free from
contamination of outside pollutants.
²Do not put objects under the front seat that will interfere with the
airflow to the rear seats (if equipped).
²Remove any snow, ice or leaves
from the air intake area at the
base of the windshield.
²Do not place objects over the defroster outlets. These objects may
block airflow and reduce visibility through the windshield. Avoid
placing small objects on top of the instrument panel. These objects
may fall down into the defroster outlets and block airflow, in addition
to damaging the climate control system.
Do not place objects on top of the instrument panel, as these
objects may become projectiles in a collision or a sudden stop.
Manual heating and air conditioning system
Fan speed control
Controls the volume of air circulated
in the vehicle.
OFFA/CMAX
A/C
Controls and features
24
Page 27 of 240

windows open. This will force most of the hot, stale air out of the
vehicle. Once the vehicle has been ªaired outº, operate the climate
control system as desired.
²Do not put objects under the front seat that will interfere with the
airflow to the rear seats (if equipped).
²Remove any snow, ice or leaves
from the air intake area at the
base of the windshield.
²Do not place objects over the defroster outlets. These objects can
block airflow and reduce your ability to see through your windshield.
Avoid placing small objects on top of the instrument panel. These
objects may fall down into the defroster outlets and block airflow, in
addition to damaging the climate control system.
Do not place objects on top of the instrument panel, as these
objects may become projectiles in a collision or sudden stop.
To aid in side window defogging/demisting in cold weather conditions:
1. Select PANEL & FLOOR
2. Set the temperature control to full heat
3. Set the fan speed to HI
4. Direct the outer panel vents towards to side windows
To increase airflow to the outer panel vents, close the central panel
vents.
Controls and features
27
Page 187 of 240
Draining the fuel filter/water separatorÐCummins B engine
Refer to your engine operator's manual for service procedures.
Fuel filter replacementÐCaterpillar 3126 B engine
The fuel filter/water separator is
located on the left side of the
engine. Replace the fuel filter/water
separator as recommended in the
Scheduled Maintenance Guide, or
sooner if it becomes plugged.
Vehicles operated on fuel with more
than average impurities may require
replacement of the fuel filter more
frequently. The spin-on filter has a
water drain valve built into the
bottom of the filter canister.
Removal
1. Using an oil filter wrench, remove the filter.
2. Carefully clean the mating surfaces.
Installation
1. Fill the filter with clean, fresh diesel fuel.
2. Coat the filter seal with clean, fresh diesel fuel.
3. Hand-tighten the filter until it seats firmly against the mount, then
tighten (by hand) an additional
1¤3to1¤2turn.
4. Start the engine and check for fuel leaks.
Maintenance and care
187